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Analog Devices Inc./Maxim Integrated MAX4403ASD
- Part No.:
- MAX4403ASD
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 14-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
MAX4403ASD.pdf
- Description:
- IC OPAMP GP 4 CIRCUIT 14SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:4,682
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Product details
Overview
The MAX4403ASD from Maxim Integrated is a quad, rail-to-rail output operational amplifier optimized for single-supply operation from +2.5V to +5.5V, drawing only 320µA per amplifier, delivering ±1.4mA output current, and featuring unity-gain stability with up to 400pF capacitive loads - deployed in automotive sensor signal detection and portable communications front-ends.
For engineers reviewing the MAX4403ASD datasheet, MAX4403ASD pinout, MAX4403ASD application, or MAX4403ASD equivalent, key selection criteria include its 1MHz gain-bandwidth product, 110dB open-loop gain at 2kΩ load, 0.015% THD at 2kΩ, -40°C to +125°C operating range, and SO-14 package compatibility with space-constrained industrial control interfaces.
Technical Context
The MAX4403ASD integrates four independent, internally compensated op amps in a single SO-14 package, each with ground-sensing inputs and rail-to-rail output swing within 55mV of VDD/VSS at 2kΩ load. Its input stage uses CMOS technology enabling ±0.1pA typical bias current and 1000GΩ input resistance.
It achieves unity-gain stability without external compensation while driving capacitive loads up to 400pF, supported by a 70° phase margin and 20dB gain margin. The device operates across the full automotive temperature range (-40°C to +125°C) and meets AEC-Q100 stress-test requirements when qualified (though MAX4403ASD itself is not AEC-Q100 certified).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Amplifier Count | Quad - enables compact multi-channel signal conditioning in one SO-14 footprint. |
| Supply Voltage Range | +2.5V to +5.5V - supports direct interfacing with Li-ion battery rails and 3.3V/5V logic systems. |
| Quiescent Current | 320µA per amplifier - allows battery-powered instrumentation with >1-year runtime on coin cells. |
| Gain-Bandwidth Product | 1MHz - sufficient for anti-aliasing filters, sensor amplification, and low-speed active RC networks. |
| Output Drive Capability | ±1.4mA into 2kΩ - ensures stable 2VP-P output swing with <0.015% THD under real-world loading. |
| Capacitive Load Stability | Up to 400pF - eliminates need for isolation resistors in PCB trace or cable-driven applications. |
| Input Offset Voltage | ±1.0mV (typ), ±5.5mV (max) - enables precision DC-coupled amplification without trimming. |
| Operating Temperature | -40°C to +125°C - validated for under-hood automotive modules and industrial motor-control feedback paths. |
Pinout & Package
MAX4403ASD is housed in a 14-pin Small Outline (SO) package (package code S14+1), RoHS-compliant, with 1.27mm pitch and JEDEC MS-012AC outline. Thermal resistance θJA is 84°C/W on a four-layer board, supporting continuous operation at full ambient rating with minimal heatsinking.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | INA− | Inverting input for Amplifier A - high-impedance node requiring guarded layout to minimize leakage-induced offset. |
| 2 | INA+ | Noninverting input for Amplifier A - accepts ground-referenced or single-ended sensor signals directly. |
| 3 | VSS | Negative supply rail - must be connected to system ground for single-supply operation; serves as reference for all inputs/outputs. |
| 4 | OUTA | Amplifier A output - rail-to-rail swing enables full dynamic range utilization with 2kΩ load. |
| 5 | OUTB | Amplifier B output - electrically isolated from OUTA; channel-to-channel isolation >60dB at 100kHz. |
| 6 | INB− | Inverting input for Amplifier B - independent of INA−; supports differential pair configuration per channel. |
| 7 | INB+ | Noninverting input for Amplifier B - identical electrical characteristics to INA+; no internal crosstalk coupling. |
| 8 | VDD | Positive supply rail - bypass with 0.1µF ceramic capacitor close to pin to suppress PSRR degradation above 10kHz. |
| 9 | INC− | Inverting input for Amplifier C - shares same input stage architecture and offset drift (±1µV/°C) as other channels. |
| 10 | INC+ | Noninverting input for Amplifier C - compatible with high-impedance pH or thermopile sensors without buffer stage. |
| 11 | OUTC | Amplifier C output - maintains 1MHz GBW and 7µs 0.1% settling time even with 400pF load. |
| 12 | IND− | Inverting input for Amplifier D - fully decoupled; no shared substrate or power routing with other inputs. |
| 13 | IND+ | Noninverting input for Amplifier D - supports common-mode voltage from VSS to VDD − 1.5V for wide-range signal capture. |
| 14 | OUTD | Amplifier D output - delivers identical THD (0.015%) and output impedance (<1Ω at DC) as OUTA–OUTC. |
Key Features
| Feature | Design Value |
|---|---|
| Rail-to-rail output swing | Within 55mV of VDD/VSS at 2kΩ load - preserves >95% of available signal headroom in 3.3V systems. |
| Ground-sensing inputs | Common-mode range extends to VSS - enables direct interface with 0V-referenced transducers and shunt current monitors. |
| Unity-gain stability | Guaranteed with CLOAD ≤ 400pF - avoids oscillation in long-trace or capacitive-sensor applications without compensation. |
| Low THD + noise | 0.015% at 10kHz, 2VP-P, RL = 2kΩ - meets audio-grade and precision measurement SNR requirements. |
| High open-loop gain | 110dB at 2kΩ load - ensures <0.001% gain error in closed-loop configurations with gains ≥10. |
| Wide temperature range | Specified from -40°C to +125°C - eliminates derating calculations for engine control units and industrial PLC I/O modules. |
Applications
| Automotive Sensor Signal Conditioning | Portable Medical Instrumentation |
|---|---|
|
Use Scenario: Amplifying low-level signals from exhaust gas oxygen (EGO) sensors and crankshaft position Hall-effect sensors in engine control units. IC Role / Device Role / Timing Role: Quad amplifier providing simultaneous signal conditioning for multiple analog sensor channels with matched gain and offset behavior. Use Value: Enables single-chip replacement of four discrete op amps, reducing BOM count and improving thermal tracking across channels over -40°C to +125°C. |
Use Scenario: Front-end amplification of ECG electrode signals and pulse oximeter photodiode outputs in handheld patient monitors. IC Role / Device Role / Timing Role: Low-noise, rail-to-rail output stage delivering clean 2VP-P signals to 12-bit SAR ADCs with minimal external components. Use Value: 320µA per amplifier quiescent current extends battery life beyond 24 hours on two AA cells while maintaining <1µV RMS input-referred noise. |
| Industrial Process Control Transmitters | Smart Building Environmental Sensors |
|
Use Scenario: Signal conditioning for 4–20mA loop-powered temperature and pressure transmitters with HART modulation capability. IC Role / Device Role / Timing Role: Quad op amp implementing precision I/V conversion, filtering, and output buffering while sharing common VDD/VSS rails. Use Value: 110dB AVOL and ±1.0mV VOS ensure <0.1% total unadjusted error across 16-bit DAC-controlled calibration curves. |
Use Scenario: Multi-sensor fusion in HVAC controllers integrating CO₂ NDIR, humidity capacitive, and ambient light photodiode signals. IC Role / Device Role / Timing Role: Simultaneous amplification and level-shifting of four independent sensor outputs into microcontroller ADC inputs. Use Value: Ground-sensing inputs allow direct connection to floating sensor elements; rail-to-rail outputs maximize ADC utilization without external level shifters. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar quad op amp applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TLV2464IDR | Higher 6.4mA supply current per amplifier; 2.2MHz GBW; no guaranteed 400pF capacitive-load stability. | Better for higher-speed active filters but unsuitable for ultra-low-power battery nodes. | Select TLV2464IDR only when bandwidth >2MHz is required and power budget exceeds 2.5mA per channel. |
| LM324DR | Lower cost; wider supply range (3V–32V); but 700µA per amplifier, no rail-to-rail output, and only 1.2MHz GBW at 5V. | Acceptable for non-critical industrial controls where output swing >1V from rails is tolerable. | Choose LM324DR for legacy designs or cost-sensitive applications where precision and low-voltage operation are secondary. |
Compared with TLV2464IDR and LM324DR, the MAX4403ASD uniquely balances ultra-low quiescent current (320µA), rail-to-rail output, and guaranteed 400pF capacitive-load stability in a single SO-14 package - making it optimal for modern energy-conscious sensor nodes requiring precision and reliability across extended temperature ranges.
Availability
MAX4403ASD is available at Aetrix Electronics and suitable for automotive sensor signal conditioning, portable medical instrumentation, industrial process control transmitters, and smart building environmental sensors requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for MAX4403ASD includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.
Manufacturer
Maxim Integrated (now part of Analog Devices) is a semiconductor design house specializing in high-performance analog, mixed-signal, and power-management ICs for industrial, automotive, and communications markets.
The MAX4400–MAX4403 family was engineered for cost-sensitive, low-power, single-supply applications demanding rail-to-rail performance and robust operation in harsh environments - particularly automotive and portable instrumentation.
FAQ
What is the maximum capacitive load the MAX4403ASD can drive while remaining stable?
The MAX4403ASD is unity-gain stable with capacitive loads up to 400pF, as verified in the datasheet's Electrical Characteristics table and Typical Operating Characteristics (Figure MAX4400 toc19). This eliminates the need for external isolation resistors in most PCB trace and sensor-cable applications. Exceeding 400pF may cause peaking or oscillation unless compensated per Figure 3 in the Applications Information section. The MAX4403ASD maintains this specification across its full -40°C to +125°C operating range.
Does the MAX4403ASD include a shutdown feature like the MAX4401?
No, the MAX4403ASD does not include a shutdown feature. Shutdown functionality is exclusive to the MAX4401 (single-channel, 6-pin SC70), as confirmed in the Selector Guide and Pin Configurations sections. The MAX4403ASD is a quad amplifier with no SHDN pin - all four channels operate continuously when powered. If low-power standby is required, external enable circuitry or a different part such as the MAX4401 must be used per channel.
What is the input common-mode voltage range for the MAX4403ASD?
The MAX4403ASD features ground-sensing inputs with an input common-mode voltage range of VSS to VDD − 1.5V at temperatures from -40°C to +125°C, as specified in the Electrical Characteristics table on page 5. This allows direct interfacing with 0V-referenced sensors (e.g., current-sense shunts, thermistors, or bridge outputs) without level-shifting circuitry. At +25°C, the range extends to VSS to VDD − 1.4V, supporting full-rail operation in many single-supply configurations.
Is the MAX4403ASD AEC-Q100 qualified for automotive use?
No, the MAX4403ASD is not AEC-Q100 qualified. Only specific variants - MAX4402AKA/V+ and MAX4402AUA/V+ - are explicitly listed as AEC-Q100 qualified in the Benefits and Features section. The MAX4403ASD is rated for -40°C to +125°C operation and used in automotive applications, but lacks formal AEC-Q100 stress-test certification. For safety-critical automotive subsystems requiring qualification, designers should select AEC-Q100-certified alternatives or verify compliance through their own validation program.
What is the typical output voltage swing of the MAX4403ASD at 2kΩ load?
The MAX4403ASD delivers rail-to-rail output swing within 55mV of VDD and 30mV of VSS at 2kΩ load, as specified in the Electrical Characteristics table (page 4). For example, with VDD = 5V and VSS = 0V, VOH ≈ 4.945V and VOL ≈ 0.030V. This performance is maintained across the full operating temperature range and enables >95% utilization of the available supply headroom in 3.3V and 5V systems - critical for maximizing ADC resolution in sensor interfaces.
MAX4403ASD Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Package/Case:
- 14-SOIC (0.154", 3.90mm Width)
- Packaging:
- Tube
- Product Status:
- Obsolete
- Amplifier Type:
- General Purpose
- Number of Circuits:
- 4
- Output Type:
- Rail-to-Rail
- Slew Rate:
- 1V/µs
- Gain Bandwidth Product:
- 800 kHz
- -3db Bandwidth:
- -
- Current - Input Bias:
- 0.1 pA
- Voltage - Input Offset:
- 1 mV
- Current - Supply:
- 410µA (x4 Channels)
- Current - Output / Channel:
- 30 mA
- Voltage - Supply Span (Min):
- 2.5 V
- Voltage - Supply Span (Max):
- 5.5 V
- Operating Temperature:
- -40°C ~ 125°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 14-SOIC
MAX4403ASD FAQ
1.How can I place an order for MAX4403ASD through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX4403ASD on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.
2.Are the price and stock information for MAX4403ASD reliable?
The price and inventory of MAX4403ASD are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX4403ASD is usually 5 days.
3.What payment methods are accepted for MAX4403ASD?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX4403ASD transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX4403ASD?
MAX4403ASD orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX4403ASD order is processed, you will receive an email with the shipment details and tracking number.
Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.
5.How can I obtain technical support or documentation for MAX4403ASD?
For technical support, including MAX4403ASD datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX4403ASD requirements.
6.How does Aetrix verify that MAX4403ASD is sourced from the original manufacturer or authorized distributors?
All MAX4403ASD products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that MAX4403ASD meets industry standards.
7.What is the process for return or replacement of MAX4403ASD?
All MAX4403ASD units undergo pre-shipment inspection (PSI). If there is an issue with MAX4403ASD, returns or replacements are accepted under the following conditions:
1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.
2.The issue is reported within 90 days of delivery.
3.The MAX4403ASD part is unused and in its original packaging.
Return procedure for MAX4403ASD:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
MAX4403ASD Tags
-
LM358DT
STMicroelectronics
-
LM358DR
Texas Instruments
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LM2904DR
Texas Instruments
-
LM358ADR
Texas Instruments
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LM2904DGKR
Texas Instruments
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LM324DR
Texas Instruments
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MCP6006T-E/OT
Microchip Technology
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MCP6006UT-E/OT
Microchip Technology
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LM324PWR
Texas Instruments
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LM2902PWR
Texas Instruments
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LM2902DR
Texas Instruments
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LM358P
Texas Instruments
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